Nautilus Compass Memory MCP server
online · 75% uptimeio.github.chunxiaoxx/nautilus-compass·v3.2.0·1.3k starsLocal-first long-term memory for AI agents, with byte-recomputable signed verification receipts.
1.3k stars56 downloads/wk
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Nautilus Compass Memory tools
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Public scan report
scanner v0.1.10 · 2026-10-30 · same rubric, same numbers if you re-run it
- Code scan132 source files scanned20/25
- Live reliabilityremote reachable in 1477ms (auth required)20/20
- –Tool poisoningtools not inspected (endpoint requires auth); not countedn/a
- Auth qualityauth enforced (unknown)9/15
- Maintenancelast push 0 days ago15/15
- Maintainer identityregistry namespace matches repository owner6/10
Findings (1)
- mediumeval / new Function used
exec.evalnautilus_compass-3.2.0/daemon.py: … # 砍激活 buffer(可 env 覆盖)。释放显存给共置的 gate B eval(soul 收敛路径)。 try: _max_seq = …
How Nautilus Compass Memory compares
Against every graded MCP server, from our own scans and uptime checks. Updated after each scan run.
- Safety score
- 82/100
- higher than 63% of 48,255 servers
- Uptime
- 75%
- of our recent checks; the typical remote server answers 100%
- Response time
- 2,343 ms
- faster than 4% of 30,031 servers
- GitHub stars
- 1,254
- more than 95% of 28,688 servers
- Downloads a week
- 56
- more than 46% of 12,191 servers with a package
Install Nautilus Compass Memory in Claude Code, Cursor or VS Code
claude mcp add --transport http nautilus-compass https://compass.nautilus.social/mcp/
What the publisher says
From the Nautilus Compass Memory repository's README, as published. We do not edit it. Read it on GitHub
nautilus-compass
<!-- mcp-name: io.github.chunxiaoxx/nautilus-compass -->
Open-source memory & reliability layer for AI agents.
Long-term memory that now beats mem0 on all three LongMemEval-S metrics
while staying fully local & 14× cheaper — plus drift detection and
cross-agent contracts that no other memory layer ships.
Plugin for Claude Code / Desktop · Cline · Cursor · Continue.dev · Zed ·
any MCP client.
Built by Nautilus Platform · open agent ecosystem · join as agent →
🇬🇧 English (this file) · 🇨🇳 中文
What this is (2026-08 state)
Three pillars, one plugin:
1 · Black-box long-term memory — now with SOTA retrieval. Raw text embedded locally with BGE-m3. No extraction LLM at ingest, no graph, no data leaving your machine. In Aug 2026 we added utterance-routed chunk retrieval: single-session and knowledge-update questions route to turn-window chunks (the answer usually lives in ONE user turn; whole-session embedding dilutes it), everything else uses session-level hybrid (BM25 + dense RRF). Result on LongMemEval-S full 500 questions, same-question head-to-head vs mem0 2.0.19 (both sides infer=False, each on its own default embedder — bge-m3 vs vertexai text-embedding-005 — our reproduction):
One-command reproduction (retrieval-only, no LLM calls, CPU works / GPU recommended for the full 500):
bash scripts/reproduce_lmes_retrieval.sh # full 500
SUBSET=12 bash scripts/reproduce_lmes_retrieval.sh # smokeThe same utterance ammo overtakes mem0 on its own home benchmark (LOCOMO-10, n=1986: 0.644 / 0.890 vs 0.592 / 0.802) and fixes the single-session collapse on LongMemEval-M (0.20 → 1.00). Full evidence chain with per-type breakdowns and every config flag: docs/evidence/headheadmem0full50020260826.json — including the experiments that failed (cross-encoder reranking hurts* on this corpus; candidate-pool K is a no-op; Qwen3-0.6B swap is a wash).
Shortened. The full README is on GitHub.
Nothing above is checked by us. What we check is on the safety report.
Grade history
- 2026-10-30restoreC → Bscore 82: eval / new Function used
- 2026-10-29downgradeB → Cscore 58: Remote endpoint did not respond; eval / new Function used
- 2026-09-19restoreC → Bscore 82: eval / new Function used
Nautilus Compass Memory: common questions
- Is Nautilus Compass Memory MCP server safe?
- Mostly: it is graded B (82/100). Read the Nautilus Compass Memory safety report
- How do I install Nautilus Compass Memory?
- It runs remotely at compass.nautilus.social. Add it to Claude Code, Cursor, VS Code or Claude Desktop with the snippets above, or call it through the mcp.market gateway without installing anything.
- Does Nautilus Compass Memory need an API key?
- Yes. The registry entry asks for
Authorization. - Is Nautilus Compass Memory maintained?
- The last commit was 5 days ago (2026-10-30). The latest release is v3.2.0.
- Is Nautilus Compass Memory up?
- 75% of our last 28 checks got an answer. We check remote servers about four times a day.
- What can I use instead of Nautilus Compass Memory?
- Servers from other publishers that do the same job: Bernstein MCP server and Memorix MCP server.
- How does Nautilus Compass Memory compare with other MCP servers?
- safety score 82/100 (higher than 63% of 48,255 servers); uptime 75% (of our recent checks; the typical remote server answers 100%); response time 2,343 ms (faster than 4% of 30,031 servers). Full comparison.
Alternatives to Nautilus Compass Memory
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